Electrical instantaneous water heater with continuous circulation, working at different voltages



Jan; a 1924.

A. DE MARCHIS ELECTRICAL INSTMITANEOUS WATER HEATER WITH CONTINUOUS CIRCULATION,

I WORKING AT DIFFERENT VOLTAGES- Filed Feb. 18 1921 /N VE/VTOP .EJ'IATE or Azrzuo D1: 17.44201?! Patented Jan. 8, 1924.

UNITED STATES 1,480,515 PATENT, OFFICE.

v ATTILIO DE HARCEIS, DECEASED; BY EBSILLA CASELLI, ADMINISTBATBIX, OF BORE,

ITALY.

ELECTRICAL INSTANTANEOUS WATER HEATER WITH CONTINUOUS CIRCULATION,

WORKING AT DIFFERENT VOLTAGES.

Application filed February 18, 1921. Serial In. 448,090.

To all whom it may concern:

Be it known that I, ERSILIA CAsnLLI, widow of DE MARCHIS, a subject of theKing of. Italy, and residing at Rome, Ital 6 (whose post-oilice address it 212 Via Cola i Rienzo, Roma, Italy), represent that A'r- TILIO DE MARoHIs has invented certain new and useful Improvements in Electrical Instantaneous Water Heaters with Continuous Circulation, lVorking at Different Voltages, of which the following is a specification.

The object of the present invention is to provide an electric heater adapted to be fixed at any water supply such as taps and the like, aiming to substitute in many cases the costly; and complicated warm water distributors, worked by gas, coal etc.

The heater can be constructed in several dimensions, such as to be able to su ply quantities of water that will answer al ex igencies, industrial or domestic.

Within given limits the apparatus Will work for all different voltages, and as the switching-off of the electric current is automatic and within the apparatus is of a simple construction and a very limited consumption of power is required, it having been designed so that its cost of production shall be the least possible.

One of the principal features consists in that, instead of adopting, as in theordinary known systems, coils lined or not on their external surface for the heating urposes, the principle has been adopte to 3 form water to circulate between and through one or more thin disks with suitable perforations to facilitate the circulalk tion of the water, the latter serving as a conducting medium.

The object of the invention will be better understood in the following description with reference to the enclosed drawings in which:

Fig. 1 is a plan View of a circular heater,

Fig. 2 is a section on line a1a of Fig. 1,

Fig. 3 is a section on line bb of Fig. 1 showing the manner how the screw terminals are applied to the apparatus. Figs. 4, 5 and 6 show another form of carrying out the invention and more exactly:

Fig. 4 shows a section on line cc of Fig. 5

Fig. 5 is a plan view, and

Fig. 6 is a section on line dd of Fig.

the current to circulate through ,5 showing the manner how the screw terminals are applied to the apparatus.

with reference to the said figures:

1 and l are two metal shells suitably .fixed upon each other, 1 is the means of connection of the heater to the water supply; 2 is a disk of insulating material; 3 is a-thin metal disk serving as resistance and at the a same time as electrode; 4 is an insulating ring of suitable dimensions; 5 is the other element or thin metal disk which serves as the second heatin'g'element 6 is a passage for the Water; 7 are the screw terminals, one of which is connected with the casing of the apparatus and which acts as one of the poles; and the other one is connected with one of the thin metal heating disks which constitutes the other pole; 8 is a fixing screw for the upper disk suitably insulated; 9 is a metal spring servin the purpose to connect the apparatus an water supply for the grounding of the current to prevent of possible dispersions. Said grounding connection can be substituted by any other suitable means which will answer the purpose.

In Figs. 4, 5 and 6 corresponding parts.

charfigures, except are marked with the same reference acters as in the preceding that in this case the insulating ring 4 is omitted'and' the outlet 1 is extended at 5' in the interior of the apparatus; the working of this second form of execution of the invention is identical. with that'of the first form, which will now be described.

The heating apparatus is fixed to a water supply point such as a tap or pipe or the i e by means of a piece of a flexible tube or sleeve constituted of any suitable material answering the purpose, in which previously the metal spring has been inserted. The two screw terminals are now electricall connected with an electric flexible cond uctor leading to the source of energy; and now upon opening the tap or water supply, Water Warm, boiling or cold proportionally to t e quantity of liquid that flows through the apparatus; the water flows between the in side walls and crosses the. existing space of apparatus near the circumference of one.

of the disks, flows along the lower surface of the disk and casing, said cg'cle will be repeated in case of two disks; t us enabling the water,

to which warmth will be given by the action of the resistances of the disks combined with that of the water, such resistance being opposed to the flow of the current. As soon as the flow of water ceases it will be clear that the current will cease to How be tween the disks thus automatically cutting ed the electrical circuit.

Should it be desired to omit one of the disks the apparatus would be built as shown in the drawings but in this case the outer surface of the casing will be enamelled or otherwise protected so as to obtain a greater degree of insulation.

It will be understood that the apparatus may be constructed of any suitable material answering the purpose, and that it is only for illustration purposes that form has been chosen which is shown in the drawings; and in the practical applications all suitable alterations answering to the various circum-' stances may be introduced without parting from the scope of the invention.

In the form shown in Figs. 4, 5, and 6 it has an external conformation which is somewhat different from that illustrated in Figures 1, 2 and 3, but the working is in all points identical with that of said figures.

1. An electrical water heating device, com-.

prising a casing having an inlet and outlet, two metalhc members arranged in the casincome ing in spaced relation and upon one of which the water is delivered and passes between the said plates to the outerot' the casing, and electrical terminals, one secured to, the casing and the other to one of the said members.

2. An electrical water heating device, comprising a casing having an inlet and outlet at opposite sides, an apertured metallic disk in the casing below the inlet, a second metallic apertured disk in the casing below and spaced and insulated from the first disk, and electric terminals, one. secured to the casing and the other to the first named disk.

3. An electrical water heating device, comprising a casing having an inclined bot tom and provided with an outletvv leading from the bottom and with an inlet at its top, a metallic disk insulated from and secured to the casing, said disk having an aperture registering with the inlet of the casing, a second metallic disk insulated and spaced from thefirst disk, said second disk being apertured adjacent its periphery,

and electrical terminals, one secured to the casing and the other to the first named disk.

In testimony whereof I have hereunto signed my name in the presence of two witnessesl.

to I,

ERSILIA CASELLI, W Mow of Attz'lio De Marchz's, Administra- "Witnesses '1 DUDLIo VVARDING, Rnna'ro DE Manoms. 

